pumper carb

[dr1445]

i got a motorstar 155 motard in the philippines. it comes with a pz27 mikuni clone carb. i was thinking of trying a pumper i found on ebay. anyone have experience with it.

http://www.ebay.com/itm/Carb-XL185-XL200-Honda-Carburetor-W-Accelerator-Pump-/150628497092?hash=item23122876c4&item=150628497092&pt=Motorcycles_Parts_Accessories&vxp=mtr

[Weldangrind]

I haven't tried one like that, but I had a Keihin pumper on an XL250S; it was terrific. I bet this carb will make a bike really easy to start. If you buy one, please let us know how it works for you.

[FastDoc]

Interesting.

Looking at the pics it's a pumper that's for sure.

I agree with Weld, might be fun to try!

[dr1445]

i have switched cv type carbs to flatside pumpers and the difference is night and day. not to sure how this one would work being a round slide and there is already a mikuni vm type carb on the bike.

[FastDoc]

What is the advantage of flat side carbs?

My YZ uses a flat slide pumper.

[dr1445]

You get smoother flow from a flat slide and when tuned right you should get better response, but most of all better topend from the smoother flow and mix of air/fuel.

[FastDoc]

Thanks. Good to know. I remember 'back in the day' a rack of flatsides was the cats arse for GSXR's and the like. Then they were desirable for racing level dirt bikes. I figure there had to be some advantage...

[pete]

there are pumpers And there are pumpers 8O ....
Some of the cheap pumper carbs do just that..pump extra fuel
when the throtle is snaped opened... riching up the mixture...
a real pumper also opens up a 2nd air system to keep
the mixture correct...

What one is this?